The ......... part of the electromagnetic spectrum can be seen through our eyes.

Explanation

To answer the question, "The ......... part of the electromagnetic spectrum can be seen through our eyes," we need to identify the specific segment of the electromagnetic spectrum that is visible to humans.

### Step-by-Step Solution:

1. **Understanding the Electromagnetic Spectrum**: The electromagnetic spectrum consists of various types of waves, arranged in order of increasing frequency and decreasing wavelength. The main categories include:
- Radio Waves
- Microwaves
- Infrared Waves
...